Very sorry. I would reinforce the coop with something stronger than chicken wire. Chicken wire keeps chickens in but doesn't really keep anything out. I would also work on training the dogs. I'm not a believer in the tying the chicken to the dog. Dogs are intelligent but not intelligent enough to put 2 and 2 together and realize that killing the chicken caused it. Besides, most dogs LOVE to roll in dead or stinky things (witness the chicken/duck poop that my LGD pup is always rolling in).
Reinforced run and training dogs should lower the chances of it happening again.
Reinforced run and training dogs should lower the chances of it happening again.